Steam-kettle



(Model.)

F. WINSLO'W.

STEAM KETTLB.

No. 250,864. Patented De0.13,1881.

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UNITE STATES PATENT Erice,

FREEMAN WINSLOW, OF SALEM, MASSACHUSETTS.

STEAM-KETTLE.

SPECIFICATION forming part of Letters Patent No. 250,864, dated December13, 1881,

Application filed March 8, 1880. (Model.)

To all whom it may concern Beit known that I, FREEMAN WINsLow', acitizen of the United States, residing at Salem, in the county of Essexand State of Massachusetts, have invented certain new and useful1mprovements in Steam-Kettles; and I do hereby declare the following tobe a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same, reference being had to the accompanying drawings, and toletters or figures of reference marked thereon, which form a part ofthis specication.

My invention relates to improvements in steam-kettles, and applies moreparticularly to kettles for heating and boiling volatile liquids thegases of which are dangerous either as inhaled by the operators or onaccount of their combustive nature, such as, for instance, benzine,naphtha, alcohol, &c.; and my invention has for its object to heat orboil such volatile ornauseousliquidseither sin glyorcompounded withother liquids or ingredients-as, for example, the mixture of benzine andgutta-percha used for making water-proof cements-and allowing but asmall percentage of the volatile liquid to escape by evaporation fromthe kettle, thus preventing the work-room from being lled with noxiousand explosive or easily combustible gases.

The invention also has for its Iobject to enable the mixing an dstirring of the contents of the kettle without removing the cover, andtherebyT to prevent the escape of the volatile gases, for which purposesmy improved kettle is constructed as follows7 reference being had to theaccompanying drawings, on which- Figure 1 represents a plan View of thekettle. Fig. 2 represents a central longitudinal section 5 and Fig. 3represents a cross-section on line A B, Fig. 2.

Similarletters refer to similar parts wherever they occur 0n thedifferent parts on the drawings.

ais the outer case or vessel, into which steam is introduced, as usual,for heating or boiling the liquid contained in the kettle b, as shown.The case a and the kettle b are united at their upper ends, and thereprovided with a flange, c, to which the cover d is secured by means ofsuitable screws, e e c e, as shown.

f is a packin g-rin g located between the cover d and flange c, so as toobtain a close connection between them and prevent all escape of gasesat such place.

Attached to the cover cl is a tube or well,g, that projects down intothe liquid h, in which its lower end should be at all times sealedthatis, the liquid within the kettle b should never be allowed to standlower than the open lower end of the tube or well g, but should alwaysbe above it, as shown in Fig. 2. This tube or well g serves as areceptacle into which the brush used by the operator is dipped to takeup a portion ofthe liquid cement; and it will thus be seen that the areaor horizontal section of the well or tube g is all the surface of theliquid that is exposed to the atmosphere in the workroom. Evaporation,of course, takes place all over the surface of the liquid in the kettle;but,with the exception of theainount exposed in the tube or well g, allsuch evaporation is condensed within the air-tight upper part of thekettle b, and again returned in a liquid state, thus effecting a greatsaving of the volatile part of the compound as compared with theordinary way of heating or boiling within open-mouthed vessels.

To more effectually prevent evaporation and loss, I provide the upperend of the tube orwell g with a hinged cover, g', which may be foldeddown and held in a closed position by means of a suitable lock orfastening device, g, whenever the operator is not at work.

Only one well or tube, g, is shown in the drawings; but where two ormore persons are to use one and the same kettle I provide the latterwith two or more tubes or wells, as may be required. t' represents ahinged cover over an inlet-opening, z", in the cover of the kettle b,through which opening the kettle can be lled from time to time, afterwhich the cover i is closed upon such opening by means of a suitablelock or fastening device, k, as shown in Fig. 2, to prevent escapementof gases at this point.

l is a vertical shaft resting loosely in a bearing in the bottom of thekettle b, and having its npper-endloosely projectingupwardthrough thecover al, and provided above it with a crank, m, as shown.

n n a a are radial arms or wings attached to IOO lloss by evaporation.

o is a steam-inlet pipe to the outer ease, ct, as usual, and p is acold-water pipe for the purpose of admitting cold water to reduce thetemperature ofthe contents of the kettle, as may be desired. q is anoutlet at the bottom of steam-ease a 'or condensed water. o 19 g arevalves or cut-ol's respectively o the pipes op q, as shown.

What I wish to secure by Letters Patent, and claim7 is- 1. The innervessel provided with one or more wells for the insertion of a brush orbrushes, and with'a removable cover7 in combination with an outerheating-vessel, substantially as and for the purpose described.

2. The steam-boiler provided with close-titting top or lid fl, havingone or more wells, as at g, projecting downwardly therefrom, and thevertical shaft l, having the radial stirring-arms n arranged below saidwell or wells, and suitable means for operating said shaft from theexterior of the vessel, substantially as and for the purpose set forth.

In testimony whereof I have affixed my signature in presence of twowitnesses.

FREEMAN WINS LOW.

Witnesses:

GEORGE HOLMAN, THOMAS F. HUNT.

